Why is internet explorer blocking web access because of expired security cert.?

[Gene]

When I attempt to go online using internet explorer key I receive reply,
"To help protect your security,Internet Explorer has blocked this website from displaying content with security certificate errors, WHY?

[Fred]

Check your machine is set to the correct date and time and in the right time zone.

[Minister of Truth]

Bc you have hi Cert security selected in Internet Options, Advanced tab, and maybe in Security tab, Custom Level.

Goto Advanced, the Security section and lower some Cert settings.

Look in Security tab, Custom Level, too, in IE 10, there's one Cert setting there.

[Boss]

Try a different browsers.